Bathtub



FIG. 1 is a top-side perspective view of the bathtub showing my new design;

FIG. 2 is a top-end perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 left side view thereof;

FIG. 6 is an end view thereof; and,

FIG. 7 is an end view opposite the end view of FIG. 6.

The bottom is substantially planar and without ornamentation. 

The ornamental design for a bathtub, as shown and described. 